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Solution


Q.

Select the incorrect match.                    [2018]
1 Lampbrush chromosomes – Diplotene bivalents  
2 Allosomes – Sex chromosomes  
3 Sub-metacentric chromosomes – L-shaped chromosomes  
4 Polytene chromosomes – Oocytes of amphibians  

Ans.

(4)

Polytene chromosomes are giant chromosomes formed by somatic pairing between homologous chromosomes and repeated replication (endomitosis) of their chromonemata. They are quite common in salivary glands of insects and are therefore, popularly known as salivary chromosomes.